djmickyg

Hi all,

I'm trying to find some rotary engine dimensions, i.e the size of the rotor, chamber etc..
any one have an knowledge on where i could find this sort of info?

Thanks
Mick

Josh13B

I did a quick search and found this info

Engine size:
10A - 491cc x 2 = 982cc rotors are 60mm width
12A - 573cc x 2 = 1146cc rotors are 70mm width
13B - 654cc x 2 = 1308cc (80ci) rotors are 80mm width
20B - 654cc x 3 = 1962cc
26B - 654cc x 4 = 2616cc

- The rotor chamber is based on a Trochoid curve http://en.wikipedia.org/wiki/Trochoid

- I'm assuming a rotor is based on the reuleaux triangle
http://en.wikipedia.org/wiki/Reuleaux_triangle

- The stator of a rotary engine (essentric shaft) follows the epitrochoid curve
http://en.wikipedia.org/wiki/Epitrochoid

- This page has the history of the mazda rotary engine, very interesting
http://en.wikipedia.org/wiki/Mazda_Wankel_engine#13B

Those guys in japan are maths freaks

djmickyg

good info..
now to do some maths to work out some shapes..

this is for a Cad model I want to work on.

thanks heaps